Question
An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then -
NEET
Physics
Wave Optics
2025
NEET 2025
NEET Physics Question (2025) — Solution
Options
- A. reflected light is completely polarized and the angle of reflection is close to 60^
- B. reflected light is partially polarized and the angle of reflection is close to 30^
- C. both reflected and transmitted light are perfectly polarized with angles of reflection and refraction close to 60^ and 30^ , respectively
- D. transmitted light is completely polarized with angle of refraction close to 30^
Answer
A. reflected light is completely polarized and the angle of reflection is close to 60^
Step-by-step solution
When unpolarised light is incident on a medium of refractive index 1.73 at Brewster's angle then reflected light is completely polarised. Using Brewster's Law aligned & = (i_p ) \\ & 1.73= (i_p ) \\ & i_p=60^ aligned By Law of reflection, i_p=r=60^
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